How to gain investors' trust if for security reasons you can't open the information about the project owner to the public?
What organizations are there that provide KYC for project owners?
You need to check vividly. Like the people behind the projects. Usually these people behind the project are being doxxed to give assurance to investors that they are really building the project but dont easily believe if its just on website, cause chances that these people social accounts are just being used. Dig deeper to check or much better confirm via call and check their social if they are really posting about it.